Esp32 data logging webserver. The ESP32 will log data to a file hosted on a microSD card.

Esp32 data logging webserver. Aug 21, 2022 · MicroPython Code/Program. Server-Sent Events. The ESP32 board will be in station mode, whereby it will connect to a Wi-Fi network through a router. You can check the tutorial on the following link: ESP32 Web Server with BME680 – Weather Station (Arduino IDE) Sep 20, 2023 · Then, we create a file called data. After completing these previous tasks, the ESP32 sleeps for 10 minutes. com, Amazon. The data (temperature and timestamp) are logged to a microSD card. DHT11 Sensor: Reads temperature and humidity. We’ll use the Arduino Google Sheets Client Library. void data_logging() The data_logging() function will log the data received from the DS18B20 sensor and the timestamp on the microSD card. Basically, it’s kinda similar to the previous project, the circuit is the same as the previous one. DIY Cloud. The RPi has a PHP script to insert and visualize your data. es, Amazon. - qiweimao/ESP32-Datalogger Mar 6, 2024 · Build an ESP32 Web Server using Files from Filesystem (SPIFFS) ESP32 Web Server – control outputs; ESP32 Deep Sleep with Arduino IDE and Wake Up Sources; This tutorial is a preview of the “Learn ESP32 with Arduino IDE” course. ” Mar 15, 2023 · In this project, we have used multiple pages for the web configurator. MicroPython is much simpler to program, it supports a REPL (Read-Evaluate-Print Loop). ESP32 DC Motors An ESP32 and SHT30 form a data logger that is accessed via a webserver and graphs data via google Charts - G6EJD/ESP32_Data_Logging_Webserver Creating an ESP32 Web Server using WiFi Station (STA) mode. SPIFFS Web Server. Image Web Server. Password Protected Web Server. The code will run a web server in ESP32 and listen for HTTP requests from clients. Before directly uploading make changes in WiFi SSID and Password as per yours WiFi. ESP32 I2C Multiplexer Sep 16, 2021 · I set the rules per you “ESP32 Data Logging to Firebase Realtime Database” article. Feb 13, 2020 · Input Data on HTML Form ESP32/ESP8266 Web Server (Arduino IDE) ESP32 with DS18B20 (one sensor, multiple sensors, web server) ESP8266 NodeMCU with DS18B20 (one sensor, multiple sensors, web server) ESP32 Web Server or ESP8266 NodeMCU Web Server; Project Overview. ESP32 Web Server: Displays real-time data in a web browser. BME680 Web Server. The accelerometer measures the gravitational acceleration and the gyroscope measures the rotational velocity. I think both are good ways to program the ESP32. We'll also create a 3D representation of the sensor orientation on the web browser. txt with the following text inside MY ESP32 DATA: writeFile(LittleFS, "/data. Mar 27, 2023 · Input Fields Web Server. Apr 22, 2020 · Hi! In this post I’m gonna explain my experience of creating a web server to input data in various data types using ESP32 and Arduino IDE. The DS18B20 temperature sensor is widely used in electronic projects that uses a single wire to acquire data, therefore claiming it as single wire programmable in nature. Output Web Server. Accesses Web Server Worldwide. In this example we are creating web server inside ESP8266 for data logging. Apr 23, 2023 · Back to topic, today’s topic will be data visualization and data logging in ESP32. 1. Jun 16, 2024 · In this tutorial, we’ve shown you how to build a simple video streaming web server with the ESP32-CAM board to build an IP camera. The ESP32 wakes up and repeats the process. You can read our in-depth project on an asynchronous web server: ESP32 Asynchronous Web Server using Arduino IDE and ESPAsyncWebServer library. Jan 11, 2019 · Arduino IDE Code For Graphs ESP8266 and Data Logging. This is the system I am working with. ESP32 DOIT DEVKIT V1 Board – read Oct 21, 2022 · In this tutorial, we will build an ESP32 web server using ESP-IDF that will display DS18B20 sensor readings. 8 TFT Display with Arduino” to create a web page to view weather conditions and also download a data log, while being able to see current conditions on a TFT if I’m physically present. We have a similar tutorial but using the BME680 environmental sensor. Sep 1, 2022 · ESP32 Web Server with ESP-IDF. The ESP32 series employs either a Tensilica Xtensa LX6, Xtensa LX7 or a RiscV processor, and both dual-core and single-core variations are available. pl and Amazon. I used the mqtt_event_handler callback event MQTT_EVENT_CONNECTED to register a new log vprintf function. The microSD card Modules are designed to communicate with the MicroSD cards. uk, Amazon. ESP32 Wi-Fi. Sender Circuit for ESP32 LoRa Web Server. Nov 16, 2023 · ESP32/ESP8266 Web Server: Control Outputs with Momentary Switch Firebase ESP32 Data Logging. ESP32 DHT11/DHT22. Find this and other ESP32 tutorials on esp32io. Additionally, this module also measures temperature. Oct 24, 2024 · DHT Web Server. txt", "MY ESP32 DATA \r\n"); Something to notice about the writeFile() function: it creates a file (if it doesn’t exist) called data. Learn how to check the temperature via web using ESP32 Web Server and DS18B20 temperature sensor. ESP32 - Log Data with Timestamp to SD Card; ESP32 - Read Config You can access these sensor readings at any time and anywhere in the world through your web server. The IDL connects to Wi-Fi and then to the clould. Oct 7, 2020 · The ESP32 will be programmed using Arduino IDE and the ESPAsyncWebServer. Sep 9, 2019 · For SPIFFS to work, we need to put the files we wish to upload to the ESP32 in a folder named data/ inside the Arduino project directory: esp32_websocket_host |_ esp32_websocket_host. Web Servers. HTTP Auth Web Server. ESP32 Email. Aug 29, 2019 · I use a webserver and I’d like use this for save and load sketch settings: 1) show settings by a html form (saved on file by LittleFS); 2) submit the form to esp32, save new data to file (by LittleFS) and use the new data to chenge current esp32 sketch settings. also make index. h header file and save it near to your ino file. In the data logger application Jul 19, 2023 · ESP32 Web Server. You may also like to read: ESP32/ESP8266 Thermostat Web Server – Control Output Based on Temperature Threshold MicroPython: DHT11/DHT22 Web Server with ESP32/ESP8266 (Weather Station) You may also like to check other ESP32 projects : ESP32 DS18B20 Temperature Sensor Web Server with Arduino IDE; Password protected ESP32 web server in Arduino IDE; ESP32 ESP-NOW and Wi-Fi Web Server using Arduino IDE; Accessing ESP32 web server from anywhere in the world Jan 21, 2021 · In this project we'll build a web server with the ESP32 to display readings from the MPU-6050 accelerometer and gyroscope sensor. It has two Sep 16, 2021 · I set the rules per you “ESP32 Data Logging to Firebase Realtime Database” article. Now we have tested the Decibel Meter and read the values on Serail monitor, we can further enhance this project. The web server we’ve built can be easily integrated with your home automation platform like Node-RED or Home Assistant. Async Web Server. Existing code aims to do data logging by connecting Mar 26, 2024 · Hi everyone. PWM Multiple Sliders Sep 28, 2022 · When there are no connections to the web page it instead enters a fast logging mode and writes the data to an attached SD card; In the fast logging mode it logs all the essential data on every run of the control loop (estimated to be around 200kB/sec, or 12MB/min) ESP32 Web Server with BME280 – Advanced Weather Station Works fine ESP32 Web Server using Server-Sent Events (Update Sensor Readings Automatically) Works fine ESP32 Web Server: Display Sensor Readings in Gauges doesn’t work I can’t get (This 192. bin file has been uploaded to ESP32, you can proceed with uploading the code to ESP32. ESP32 is the server and there are 2 Arduinos. DHT11/DHT22 Web Server. The boot. The REPL allows you to connect to a board and execute code quickly without the need to compile or upload code. Aug 9, 2018 · These are the snippets of code you need to include in your web server sketches to set the ESP32 as an access point. System Overview. Penasaran kan? Learn how to create a web server on ESP32 to provide web interface to monitor/control ESP32 via web. Apr 2, 2019 · In this project you’ll create a standalone web server with an ESP32 that controls outputs (two LEDs) using the Arduino IDE programming environment. Other Projects using ESP32 Aug 31, 2020 · Testing the ESP32 Data Logging Project. Timer Control Web Server. ESP32 BLE Client-Server. Soft Access point Web Server. ESP32 PIR. The first arduino manages LoRa communication and initiates contact with remote controller. Firebase ESP32 Data Logging. This sensor is ideal to Nov 1, 2018 · Hi Bob. It also transmits sensor data from ESP32 and IMU information from the remote controller to ESP32. To get the log output, just subscribe to the log's topic on the MQTT broker. The MPU-6050 IMU (Inertial Measurement Unit) is a 3-axis accelerometer and 3-axis gyroscope sensor. Ngrok is a service that allows you to expose a local server to the internet. ESP32IO. ESP32 Weather Station. To solve this problem you have two options, first is refresh page with HTML Tag: ex. Control GPIOs. Here are some of the benefits of using Google sheets for IoT applications: Data Logging is pretty simple and robust and doesn’t need any third-party services. se Oct 16, 2020 · This can be used to automatically display new sensor readings on the web server page when they are available. ESP32 Relay Module. ESP32 May 23, 2022 · I used the MQTT client to send log prints to a broker on the network. Apr 23, 2020 · Setelah kemarin kita mencoba membuat sebuah visualisasi data yang ditampilkan dengan menggunakan web server, kali ini kita akan mencoba melakukan data logging dengan menggunakan ESP32. ESP32 BLE. With an Internet connection, you can make data logging projects with timestamps. md at master · G6EJD/ESP32_Data_Logging_Webserver Jun 28, 2020 · Today we will learn to build NodeMCU ESP8266 Data Logger to Upload Data on Webserver. Dec 16, 2023 · After the connections are done and the MicroPython . Timer/Pulse Web Server. This tutorial is adaptable with any other suitable sensor as well. Let’s say we need to create a project that uses the ESP32 to control a light bulb over WiFi. main. Sensors. Modules. Apr 26, 2020 · In this post, I will share my project on logging a data captured from a sensor to an online MySQL database using ESP32. py runs after device starts and immediately sets up multiple configuration options like your network credentials, importing libraries. ca, Amazon. To build the web server you need three different files: the Arduino sketch, the HTML file and the image. Complete Oct 19, 2022 · ESP32 ESP-IDF DHT22 Web Server Overview. We’ll also store the HTML file on LittleFS. The Web App you'll create can be accessed worldwide to control and monitor your ESP32 from anywhere in the world. We hope you’ve find this tutorial useful. ESP32 PHP Email. txt’. ESP32 HC-SR04. The ESP32 sends this data to a web page, logs it to Google Sheets, sends alerts if thresholds are exceeded, and controls a fan or heater. Physical Apr 19, 2020 · Save Data Input to SPIFFS with ESP32 and Arduino IDE Hi! In this post I’m gonna explain my experience of creating a web server to input data in various data types using ESP32 and Arduino IDE… Aug 21, 2020 · Nevertheless, here the ESP32 that receives the measured data from the sensors also exposes a web server to display this data and make it remotely accessible from a simple smartphone or PC. PWM Slider Web Server. Our ESP32 will host a web server that serves the HTML/CSS files to a web client which is a web browser. ESP32 I2C I'm working on an underwater data logging project where my ESP32 will save depth and temperature data to a microSD as a CSV. Put both files (ESP32_SHT30_SPIFFS_DataLogger_01. ESP32 - Log Data with Timestamp to SD Card; ESP32 - Read Feb 17, 2022 · Thermostat Web Server. Let’s move on to the interesting stuff now! As the title implies, we will configure an ESP32 web server in Station (STA) mode to serve web pages to any connected client on the existing network. ESP32 I2C Multiplexer May 7, 2023 · Hi there! Welcome back with me, Christina Wijaya, in my eleventh article on the ESP32 experiments series. Now let’s take another example to display the same readings on the web server using the Arduino IDE. Dec 23, 2021 · For example, I combined the “ESP32 with BME280 Sensor” tutorial with the “ESP32 Data Logging Temperature to MicroSD Card” and the “Guide to 1. Servo motor Web Server BMP180 Web Server. If you’ve been following some of our previous web server projects like this one, you may have noticed that if you have several tabs (in the same or on different devices) opened at the same time, the state doesn’t update in all tabs automatically unless you Apr 22, 2022 · We can use this for many IoT applications from simple data logging to live monitoring and management of IoT devices. The code contains two parts. The steps below explain how to upload web server MicroPython code to ESP32 using Thonny IDE. Learn: How to use ESP32 with IFTTT, How IFTTT works with ESP32. Nov 20, 2019 · There are several ways to display images on an ESP32 web server. I'd like to have a method to automatically upload this CSV, or the contents in it, to a web server like Thingspeak (or a less expensive option) so that I'm able to view the data graphed over time easily when the device comes back to the surface. ESP32 MySQL. Dec 9, 2021 · ESP32 Web Server. An ESP32 and SHT30 form a data logger that is accessed via a webserver and graphs data via google Charts - G6EJD/ESP32_Data_Logging_Webserver Jan 20, 2024 · SPIFFS Web Server. Now that you know how to take readings from the sensor, and how to build a table to display the results, it’s time to build the web server. js. Here we have modified the above example to display the result on the web server. May 23, 2020 · the Highcharts script running in the HTML of the Web Browser requests data from the ESP32 every 10 seconds (can be configured in HTML file) the ESP32 added a handler in the WebServer to send the data after each GET requests back to the Browser script, a Highcharts mult-line graph needs multiple data compiled into a JSON object to be returned, In this session, you will learn,- What is web server?- How to create a webserver?- How does a webserver work?- How to create a webpage with ESP32- How to tak ESP8266 NodeMCU Data Logging to Firebase Realtime Database; ESP32 Data Logging Firebase Project Overview. We also have a similar WebSocket guide for the ESP8266. MicroSD Card Module Introduction. The ESP32 will log data to a file hosted on a microSD card. Here's how I did it. Jan 12, 2021 · In this guide you'll learn how to use the MPU-6050 accelerometer and gyroscope module with the ESP32. DS18B20 Web Server. Accelerometer ADXL345 Web Server using ESP32 . it, Amazon. Now let us see the sender and receiver circuit for building ESP32 LoRa Web Server. It is precisely for this reason that the receiving node is connected to a WiFi router, to share this data with the entire local network. The aim of this project is to log sensor readings acquired from BM280 sensor to the Firebase Realtime database along with the current epoch time. As soon as the program gets uploaded, temperature and humidity values with date and time stamp will start to get stored in the SD card in a file named ‘data. Last time, we made a data visualization from our SQL database. I assembled both the circuit on breadboard. BME280 Web Server. py. May 14, 2024 · ESP32 Web Server. com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon. Now let us check the ESP32 MicroPython Code for Creating Web Server. HTTP GET Web APIs. RGB LED Web Server. ESP32 ESP-NOW. Gauges Web Server. The readings are updated automatically using Server-Sent Events and the 3D representation is handled using a JavaScript library called three. The second arduino is just a remote controller that moves Jan 27, 2022 · DS18B20 Web Server. HTTP POST Web APIs. Mar 12, 2021 · You’ve also learned how to use it for data logging projects or storing files to serve in your web server projects. Chart Multiple Series Web Server. ESP32 DC Motors. The ESP32 module is accessed by a Raspberry Pi microcomputer which has the function of storing and managing data. Images Web Server. 168. ino and credentials. We’ll store the image on the ESP32 filesystem (LittleFS). Parts Required. Physical Button Web Server. com. 00 page can’t be found) I didn’t load ESP32_Gauges, could this the culprit! The parameters are formed like this <quantity>+<identifier> = <parameter>. ’ Data will consist of the sensor readings count (sensor_data), the current date (day), the current time (Time) and the sensor reading( temperature). WebSocket Server. de, Amazon. I double checked them, and they appear to be correct I am seeing the connection in the “Authentication” window, and I get a message indicating that the initial connection is has happened. This repository contains the source code for an ESP32-based project that combines a web server with data logging capabilities. Please see TN088 for the latest much improved version An ESP32 or ESP8266 and suitable sensor, in this example an SHT30 are paired together to provide a small data logger with a Webserver Jun 14, 2018 · ESP32 Datalogger: Download Data File via Web Server (Arduino IDE) ESP32: How to Log Data (10 Different Ways) ESP32 Datalogging to Google Sheets (using Google Service Account) Learn more about the ESP32 with our resources: Learn ESP32 with Arduino IDE (eBook) SMART HOME with Raspberry Pi, ESP32, ESP8266; Build Web Servers with ESP32 and ESP8266 An ESP32 and SHT30 form a data logger that is accessed via a webserver and graphs data via google Charts - ESP32_Data_Logging_Webserver/README. If you’ve followed other ESP32 tutorials, you should be familiar with the majority of the code. May 16, 2024 · In this guide, we’ll build an ESP32 datalogger that also hosts a web server so that you can access and download the data remotely. ESP32_Data_Logging_Webserver. LoRa Web Server. For this project, you need to have a server that hosts a MySQL database and… Power and Temperature Data Logger With ESP32 and AWS IOT: In this tutorial we will see how to build a simple IOT Industrial Data Logger(IDL) to log the device temperature and current to AWS IOT and display it on Hornbill IO. The following image shows a high-level overview of the project we’ll build. ESP32 Web Server Weather Station with BME280 Sensor. ESP32 LoRa. To access an ESP32 web server from anywhere using . Apr 28, 2020 · Learn how to add HTTP authentication with username and password to your ESP32 and ESP8266 Web Server projects. The implementation is quite simple: we will set up the ESP32 in soft-AP or STA mode, allowing it to serve a web page displaying the light switch’s state as either “on” or “off. We will create the web server with the help of the HTTP web server library available in esp-idf. Once the hardware and the code are ready, connect the ESP32 board to your laptop and upload the code. MicroSD Card Web The ESP32 Data Logger is a cost-effective data acquisition system designed to support user-defined sensor interfaces. Same method is also used to display multiple pages in many other ESP32 SPIFFS webserver and ESP32 Data logging webserver examples. For instance, "voltage" and "PinA" yields "voltagePinA", which represents the "/voltagePinA" GET request that we defined in the ESP32_DataPlotter. ESP32 Bluetooth. After a successful connection with the AP, an IP address will be assigned to the board which will be used to access the web server. To show you how to build a web server with files from a microSD card, we’ll build a simple HTML page that displays some text formatted with CSS. ESP32 DC Motors The ESP32 S3 Webserver Project was designed to provide a flexible base for building various web-enabled micro-controller projects on from within the Arduino environment. ESP32 is a series of low cost, low power system on a chip microcontrollers with integrated Wi-Fi and dual-mode Bluetooth. ESP32 Servo. We can use a 0. ESP32 ESP-MESH. It works very well and can handle a ridiculous number of prints per second. Input Fields Web Server. We will be using the MAX6675 for… Apr 10, 2020 · The loop block is populated unlike the previous posts because we don’t use the ESP32 asynchronous web server library, rather than we are using vanilla arduino IDE HTTPClient library. Before uploading the code make sure you have added your SSID, and Password as follows. Web page requires frequent refresh to get the update from ESP32. ESP32 Web Servers. 96″ I2C OLED Display for real-time reading of dB SPL value. The detailed instruction, code, wiring diagram, video tutorial, line-by-line code explanation are provided to help you quickly get started with ESP32. For more in-depth projects with the microSD card, we recommend taking a look at the following: ESP32 Data Logging Temperature to MicroSD Card; ESP32 Web Server with Files from microSD Card; We hope you’ve found this tutorial Feb 16, 2022 · PWM Multiple Sliders Web Server. ESP32 I2C Multiplexer. Apr 26, 2020 · After yesterday we tried to make a visualization of data displayed using a web server, this time we will try to do data logging using ESP32. Water Sep 23, 2021 · This guide will teach you how to create a simple Firebase Web App to control and monitor your ESP32 board. HTTP Auth Step 1: ESP32 includes the data to HTTP/HTTPS request and send the request to the Web server Step 2: Web server runs a PHP script that handles the request from ESP32 Step 3: PHP script extracts the data from the HTTP request, processes the data, and then interacts with MySQL database. Jul 16, 2023 · Making ESP32 IoT Decibel Meter (SPL) with Data Logger. co. Stepper Motor Web Server. Oct 19, 2018 · Save the code as Async_ESP32_Web_Server or download all the project files here. In Arduino, click Sketch > Show Sketch Folder to navigate to your project directory. Aug 4, 2019 · Creating the Web Server. ESP32 Text Messages. Build an ESP32 or ESP8266 client that makes an HTTP POST request to a Raspberry Pi LAMP server (Linux, Apache, MySQL, PHP). But today in this session we will learn to create own web server and update the data in realtime. The web server responds to an http query by returning the value of the data. The ESP32 code. To learn how the full web server code works, take a look at the ESP32 Web Server tutorial. Relay Web Server. fr, Amazon. It can be used to build a personal webserver, monitoring, facilitate home automation and more. Relay Control Web server. py 2. MPU-6050 Web Server. The current epoch time will be acquired from an NTP server. boot. When a user enters the IP address in a web browser, an HTTP get request is sent to ESP32. For this tutorial you’ll need the following parts: Mar 19, 2020 · Request date and time from an NTP Server using the ESP32 with Arduino IDE. The project utilizes the ESP32 microcontroller, an SD card module, and Wi-Fi connectivity to create a web interface for controlling data recording and downloading recorded data files. Users can bring their own sensor library and add callbacks to this repository, enhancing its functionality and adaptability for various data logging needs. ESP32 Web Server. View Sensor Readings. . Here is an ESP32 LoRa Module SX1278 Sender Circuit with DHT11 Sensor. ESP32 MQTT. Stepper Motor WebSocket. 000. This Web App makes the bridge between the Firebase Realtime Database and the ESP32. ESP32 MicroSD Card Data Logging. You just have to define the sensor and initialize it accordingly. ino |_ data |_ index. html. You can make it on PCB if you want. We can also send the value to any IoT platform such as Blynk, Thingspeak, Ubidots or any other Server. Organizing your Files. If not, take a look at the ESP32 Web Server Tutorial. h) in your sketch folder and modifiy the Wi-Fi access requirements (password and SSID) to match yours via the file ESP32-DataLogger-WebServer. GPIO Web Server. Mar 26, 2023 · In this project you’ll build an ESP32 or ESP8266 client that makes an HTTP POST request to a PHP script to insert data (sensor readings) into a MySQL database. Easy manipulation and analysis of collected data with functions. DHT Web Server. Jan 20, 2024 · In this project, you’ll learn how to log data to Google Sheets with the ESP32 securely and reliably using a Google Service Account and Google Sheets API. Momentary Switch Web Server. ESP32 Weather Station Aug 10, 2021 · A workaround for this issue is to use a web-based serial monitor—the ESP32 hosts a web server that serves a page to visualize the messages as you would with the “regular” serial monitor. most of the things are explained inside code comments. The WebSerial web page also allows you to send data from the web page to your board. txt with the text we define inside. Plot/Chart Web Server. Create a simple ESP32 Web Server to control LEDs from a web page; Monitoring DHT11 and DHT22 sensor values on the Web server with ESP32 Password-protected Web server with ESP32 in Arduino IDE Ngrok Service Introduction. May 10, 2020 · We used an ESP32 module that acquires the analog data via ADC and makes it available on the WiFi network via a web server. This will be saved in the variable ‘Data. ino-sketch. nl, Amazon. Before I start I am a noob so please be considerate. An ESP32/ESP8266 and SHT30 that together form a data logger that is accessed via a webserver and data is graphed via google Charts. To log data to the microSD card we’re using a microSD card module. MicroSD Card Web Server. refresh at every 30 seconds. Thermostat Web Server. ESP32 WebSocket. We’ll also serve a favicon. You often have seen the data logging projects with real-time graphs and tables using IoT Platforms like ThingSpeak. ESP32 SIM800L Nov 20, 2018 · In many IoT Applications we monitor sensor data and we want to display it in wab page. Aug 25, 2022 · ESP32 Web Server. Nov 27, 2023 · Circuit: ESP32 LoRa Sensor Data Monitoring on Web Server. Feb 25, 2021 · If you want to build a web server with files from SPIFFS, follow the next tutorial instead: ESP32 Web Server using SPIFFS (SPI Flash File System) Project Overview. The project measures temperature and humidity using a DHT11 sensor connected to an ESP32. There is finally an Embedded Systems project with no Apr 14, 2020 · So, the ESP32 needs a Wi-Fi connection. ESP32 DC Motors The web server that we will build in this tutorial is an asynchronous web server. In this section, let us create the ESP32 Output Control Web Server using ESP-IDF. ESP32 Learn how to use ESP32 as web client, how to use ESP32 to make HTTP request to a web server, a website, Web API or REST API, how to send data via HTTP request and how to process the HTTP response. ESP32 HTTP GET POST. tkfxu xuyhj tin fvlmgzp lcbkh gfrr gif enkuekz bvo nsfmiiq